Need help with keys

[D3AD UPR1S1NG]

At the moment I am trying to make a new custom story and I have just got into trying to script but at the moment I suck, I need help trying to unlock a door with this key I have because everytime I click recompile script and lang it throws the following errors at me

main (7,6) : INFO : Compiling void OnStart ()
main(9,38) : ERR : prison_door_1 is not declared
main (11,6) : INFO : Compiling void UseKeyOnDoor(string&in, string&in,)
main (14,17) ERR Cellkey is not declared

here is the script that i'm using and I know it's me making a stupid mistake but could somebody point it out to me

//===========================================
// This runs when the map first starts
void OnStart()
{
AddUseItemCallback("","CellKey",Prison_door_1,"UseKeyonDoor",true);
}
void UseKeyOnDoor(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("prison_door_1",false,true);
RemoveItem(CellKey);
PlaySoundAtEntity("","unlock_door","prison_door_1", 0, false);
}